Gate valve



Sept. 3, 1929. I Q DUP H 1,727,161

GATE VALVE Filed Feb. 12, 1929 f a: 45 \i M .75 36' 33 Inventor Wig/ 5 jez azzzfi A iiorney Patented Sept. 3, 1929.

Ul'l'El) STATES PATENT OFFICE.

CHARLES DUPUIS, OF LADYSMITH, WISCONSIN.

GATE VALVE.

Application filed February 12, 1929. Serial No. 33%),378.

facilitate the cleaning or repairing of the.

respective parts.

Another object of the invention is to provide a valve having a very simplified assembly with a view to standardizing parts for purposes of repair.

Further objectsof the invention are to provide in a manner as hereinafter set forth a valve which is particularly adapted to control the flow of paper pulp and that is strong, compact, durable, highly efficient for its intended purpose, thoroughly reliable in its operationand comparatively inexpensive to manufacture and install. I

"With the foregoing and other objects in viewfthe invention consists of the novel construction, combination and arrangement of parts as hereinafter more specifically described-and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications maybe resorted to which fall withinthe scope of the claims hereunto appended.

In the drawings wherein like reference characters denote corresponding Y throughout the several views:

Figure '1 is a side elevation of the valve in accordance with this invention, FigureQis an end elevation ofthe valve,

Figure is a vertical transverse sectional view taken'on the line 3-3 of Figure 1 lookinginthe direction of the arrows,

Figure l is a section taken on line 4+4 of Figure 1 looking in the direction of the arrows;

Referring to the drawings in detail, wherein is illustrated-an embodiment of the valve in accordance with this invention, the valve comprises a substantially inverted T-shaped body portion indicated at H. j

The stem of the body portion H is formed of a hollow bell-shaped shell 5 connectedto a pair of oppositely extending conductor sections indicated generally at 6, 7.

On the diametric opposite sides,the walls of the shell'are provided with laterally exparts tending flanges 8, 9 which extend in a horizon tal plane and are substantially rectangular in configuration. The flanges are provided with a pair of openings extending vertically through the flange for the reception of the stud screws 10.

The upper end of the shell 5 is closed by the wall 11 which is made integral with the sidewalls thereof and is provided with a peripherally threaded vertically extending opening along the axis of the shell. A screw threaded annular bushing 13 is suitably mounted in the opening 12 and the bushing forms a bearing for journalling the upper ends of a vertically extending valve stem indicated generally at R.

Abutting the upper face of the bushing cap 18 is the lower face ofthe hub 14 of the operating wheel 15 which engages with the up per extremity of the valve stem R for the purpose of turning the valve stem.

Thevalve stem R is supported vertically in the'hollow cavity 16 of the shell 5 and is cylindrical in cross section but not of the same diameter throughout its length. The major portion of the length of the valve stem R from thelower end is peripherally threaded asat 17 and the threaded portion extends the 'majorlength thereof while at the same time the diameter of the threaded portion is greater than the upper portion thereof.

' The length of the threaded portion of the valve stem R is greater than the length of the shell 5. The upper portion of the threaded section 17 is provided with an annular shoulder 18, the upper face of which abuts against the inner face ofthe wall 11 and the bushing 12. I Merging from the upper face of the shoulder 18 the valve stem is slightly reduced in diameter as indicated at 19 and the reduced portion 19 is journaled in the bushing 13 and the lower end of the hub 14;.

Merging from the upperend of the bearing 19 is a further reduced portion of the valve stem R as indicated at 20 which extends the balance of the way through the hub lt and projects beyond the upper face of the hub. The projecting portion is peripherally threaded to receive the nut 21 which is screwed. down on 20 until it abuts the hub 14.

The nut 21 takes up excess vertical movement in the valve stem R by pulling the shoulder 18 into tight engagement with the wall 11 and bushing 12 thereby providing a watertight joint therebetween. Rotation of the stantially square flanges and the opposite side flanges 25, 26 extend in a vertical plane. The

opposite side flanges 25, 26 of the members 6,

7 are in abutment with each other and are secured together by a plurality of bolts 27 whereby the two sections 6, 7 are secured together having the inner walls thereof in registration. The upper square flanges 28,

29 form a continuous plane surface and are.

secured to the flange 8 of the shell 5 by means of the stud bolt 10.

The registering flanges 28, 29 intermediate their ends are each cut away in opposite directions from their abuttlng inner edges to provide a substantially rectangular opening 30 which forms part-of the seat for the gate G at the upper end thereof.

It will be apparent from reference to Figure 3 of the drawing that the gate G is slidably supported in the opening 30. The bottom pair of opposed flanges 31, 32 have the,

outer faces thereof in the same plane and a plate cap 33 is secured to theopposed flanges.v

by. means of bolts 34.

Intermediate the ends of the flanges 31, 32, the abuttting edges are cut away to pro vide a registering rectangular opening 35, the lower ends of which extend into a substantially rectangular cavity 36 formed centrally on the inner wall of the plate 33 and the opening 35 and the cavity 36 being in registration form a supporting seat for the lower end of the gate G.

The inner walls of the oppositely extending conductor members 6, 7 converge inwardly in opposite directions as indicated at 37, 38 in Figure 4 of the drawings to the major portion i valve seat for the gate G.

of the length of both sections from the opposite circular mouths on the opposite ends of the conductor members.

The gate Gris formed of a substantially rec tangular block of non-corrosive metal 44 the length or height of which is greater than its width and the block 44 has a centrally disposed vertically extending threaded opening '45 extending entirely through the said block 44.

The lower end of the threaded valve stem R engages the threaded opening 45 and by turning the valve stem R the block is vertically movable thereon. The width of the block 44 is equivalent to the width of the adjacent shoulders 41 and 42, 43 and the thickness thereof is such as to span the inner end of the converging walls 37, 38 whereby the shoulders form part of a seat therefor and the thickness of, the block being disposed across the converging walls stops the flow of pulp through the interconnected conductor sections 6, 7.

It is pointed out that the valve stem R is rotatably mounted within the cavity 16 but is not longitudinally movable therein. The space or cavity 16 accommodates the upward movement of the gate G of the stem 17 when through the conductor pipe of a paper mill.

l/Vhile the valve is used with a fan pump box under wire it may be used as well back of the wire. It is pointed out that although the valve is illustrated in conjunction with a nonrising stem still it is within the contemplation to be adapted with a rising or movable stem and it is furthermore pointed out that the width of the valve gate is to be governed by the size 'ofthe paper machine which the valve is feeding.

All of the automatic controls on the paper machine should be subject to the operation of this valve and furthermore the valve is adaptable as well to a centrifugal pump as to a reciprocating pump.

Having thus described my invention, what I claim as new is:

1. A conductor member having opposed months, the inner walls of said member converging inwardly from the mouths to a point adjacent the center of said member and merging into straight opposed walls at the approximate center of said member, a valve gate slidably abutting said straight walls and spanning said converging walls at the point of merger, a valve stem supported on said member and connected to said gate for moving the latter with respect to said member and means on the bottom of said inner walls of said members in alignment with said vertical-walls for receiving the valve gate.

2. A conductor member having opposed mouths, the inner walls of said memberconverging inwardly in a vertical plane from the mouths to a point adjacent the center of said .member, and merging into straight opposed vertical walls at the approximatecenter of said member, a valve gate vertically slidable and abutting said straight walls and spanning said converging walls at the point of merger, and a valve stem vertically supported on said member and threadably connectedto said gate for moving the latter with respect to said member and means on the bottom of said inner walls of said members in alignment with said vertical walls for receiving the valve gate.

3. In a valve of the class described, a pair of interconnected conductor sections having oppositely extending mouths, inner walls of said sections converging from the months to a point adjacent the inner ends of said section, straight walls at the inner ends of each section merging with said converging walls, top and bot-tom flanges formed exteriorly at right angles to said straight walls, said flanges being cut away centrally to form openings in alinement with said straight walls, a polygonal valve gate slidably seating in said openings and abutting said straight walls, said gate spanning said converging walls at the point of merger, a plate secured to said bottom flange having a cavity therein registering with the opening in said bottom flanges for receiving the bottom of said gate and a valve stem movably connected to said sections and threadably engaging said gate for operating the latter.

In testimony whereof I aflix my signature.

CHARLES DUPUIS. 

